Google's Android team have updated the Android Developers site, which keeps everyone updated with what's going on about the company's latest mobile OS, Android 4.1 Jelly Bean. The team have talked about it, too, where they said:
A new revision of the Android Design site has been launched!
It contains lots of new in-depth content, including exciting new features from Android 4.1, Jelly Bean.
New patterns cover widgets, confirming and acknowledging, help, andaccessibility. You'll find links to design sessions presented at Google I/O 2012, plus updated information on notifications and progress and activity. Our downloadable stencils and sources have been expanded to include Nexus 7 frames, and we now offer Adobe® Illustrator® Vector files for your mocks.